442422223 has 4 divisors (see below), whose sum is σ = 442904560. Its totient is φ = 441939888.

The previous prime is 442422193. The next prime is 442422241. The reversal of 442422223 is 322224244.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 442422223 - 2⁵ = 442422191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442422023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 239790 + ... + 241627.

It is an arithmetic number, because the mean of its divisors is an integer number (110726140).

Almost surely, 2^442422223 is an apocalyptic number.

442422223 is a deficient number, since it is larger than the sum of its proper divisors (482337).

442422223 is an equidigital number, since it uses as much as digits as its factorization.

442422223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482336.

The product of its digits is 6144, while the sum is 25.

The square root of 442422223 is about 21033.8351947523. The cubic root of 442422223 is about 761.9836356344.

Adding to 442422223 its reverse (322224244), we get a palindrome (764646467).

The spelling of 442422223 in words is "four hundred forty-two million, four hundred twenty-two thousand, two hundred twenty-three".